Vortical boiling phenomenon based water cooling block

ABSTRACT

A convective cooling cell is providing the vortical boiling regime of flow of coolant inside of it that allows exploiting important advantages of the vortical boiling phenomenon: highest coefficient of the heat transfer at very small increase of the hydro-resistance, unchangeable or even increasing performance (thermo-resistance) at increase of the coolant&#39;s discharge, and anti-adhesive action of stream inside the cooling cell. 
     The cell comprises a heat intake box and coolant entrance and exit channels with couplers on their ends. The triangular lattice of hemi-spherical dimples on the top and bottom sides of cell provides generation of a coherent system of vortical tubes that effectively are sucking heat from the dimple into the core of the coolant&#39;s stream.
 
Essentially, the cell allows many technologies of manufacturing: milling, stamping, melting, and/or their combinations.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to an apparatus for and a methodof cooling of heat generating surfaces. It claims priority under U.S.Provisional Patent USA 61/336,655 filed Jan. 25, 2010.

2. Description of the Related Art

Thirty years ago, new phenomena in hydrodynamics forced a re-examinationof the entire approach to the efficiency problem in convective coolingprocesses. That central problem was to overcome the losses of efficiencyof convective cooling with the increasing of the coolant's velocity. Thesolution was in the study of laminar flow, which is based on the premisethat fields of velocity of any stable flow are determined locally if thesource of energy, the boundary walls, and free surfaces are all known.It was concluded that there are two types of concavities on the globallysmooth surfaces: those that are allow a laminar streamlining were calleda potential concavities and those that do not allow any laminarstreamlining, even at arbitrarily small velocities of the fluid werecalled a non-potential concavities.

The investigation of said non-potential concavities has lead to thediscovery of a new type of self-organization of the fluid atstreamlining of cavities: the vortical boiling phenomenon.

-   -   This type of flow was predicted, discovered and investigated in        1980-85 in the Khurchatov Institute of the Atomic Energy in        Moscow (Russia) (see, for example, [1-2], and the cumulative        report [3]) and its physical nature and features were described        and explained in series of works of S. T. Belyaev and Y. K.        Krasnov [4-6]. During following 30 years this type of flow was        exploit by many groups for many areas of applications (Detailed        report on that matter one can find on www.thequalitics.com in        [7], “Presentation of the Vortical Boiling Flow”).

The essence of vortical boiling phenomenon is in the fact that thesurface of non-potential concavity generates so-called Rotons—thesmallest laminar rotating inviscid excitations of the streamliningfluid. These Rotons are growing in numbers and become self-organized ina mesoscopic vortex inside concavity until the size of this vortex willexceed some critical level at given rate of the flow of the streamliningfluid. After that said vortex with entire of its fluid atmosphere isejected from the cavity, leaving a space for creation of the next one,and so on. Like air bubbles at the boiling of water, said generatedvortices, surrounded by their fluid atmospheres, are heated up tosurface temperature, and, therefore, do carry out a lot of heat.

Because said vortices with their fluid atmospheres are laminar inviscidexcitations of the streamlining fluid, they do not increase theturbulence of said fluid (see the cumulative report [3]). This featureof vortical boiling together with highly efficient heat transfer on thestreamlined surface accompanied with incredibly small hydraulicresistance delivers the solution of the mentioned central problem of theentire convective heat exchange technique: which is to overcome lossesof efficiency of the convective cooling with the increase of thecoolant's velocity.

The present invention is a novel application of vortical boiling flowsfor cooling of computer microprocessors (integrated circuits) that areproducing a high level of heat. The present invention solves along-standing problem of providing of the equally effective convectivecooling at the wide range of generated heat power due to a simplemeasure: appropriate changes of the velocity of the coolant that isflowing over the heated surface.

SUMMARY OF THE INVENTION

It is an object of the present invention to teach means of using of theall profound features of the vortical boiling phenomenon at convectivecooling of the highly heated devices, and particularly—computer integralcircuit chips

It is an object of the present invention to teach means how to avoid ahigh hydro-resistance in the channel of cooling cell while saving theheat transfer in this channel on extremely efficient level.

BRIEF DESCRIPTION OF THE DRAWINGS

Advantages and features of the present invention are better understoodwith reference to the following and more detailed description and claimstaken in conjunction with accompanying drawings, in which like elementsare identified with like symbols.

FIG. 1 shows a built model QualiCell of the computer chips cooler basedon the methods and principles that are disclosed in the presentinvention.

FIG. 2 shows a size comparison of QualiCell with standard SANYO Cellphone.

FIG. 3 shows a side view of Inlet (Outlet) channel that is used inQualiCell.

FIG. 4 shows a face view of Inlet (Outlet) channel that is used inQualiCell.

FIG. 5 shows a back view of Inlet (Outlet) channel that is used inQualiCell.

FIG. 6 shows a structure of flow from the used Inlet channel.

FIG. 7 shows a few types of the triangular lattices of sectoredspherical dimples that should be used in the heat intake box of coolingdevices to provide vortical boiling regime of flow of the coolant in it.

FIG. 8 shows the orientation of the lattice of dimples against flow ofcoolant and direction of sending of dimples in lattice to provide easyways (saddle-like paths) for the generated vortices to escape dimples.

FIG. 9 shows the structure of flow over triangular lattice of thenon-potential dimples in the regime of well-developed vortical boilingstreamlining. Generally, each dimple generates two vortical tubes thatare connecting this dimple with two neighbor dimples placed ahead andalong the stream.

FIG. 10 shows schematics of conjugation of streamlining surfaces insideQualiCell to avoid parasitic turbulizations of coolant's flow inside ofit.

FIG. 11 shows schematics of assembling QualiCell of two parts—Upper halfand Lower half of it that could be manufactured through the stamping ormelting processes.

FIG. 12 shows schematics of a multi-store setting of coolant channels inthe same cooling cell when heat generating layers of an integral circuitare suited between said channels.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The best mode for carrying out the invention is presented in terms ofits preferred embodiment, herein depicted within the Figures.

A preferred embodiment of the present invention is the model QualiCellthat is shown in FIG. 1-2. Due to two elastic tubes that are fixed(using appropriate standard bandages, if necessary) on the two couplerson the ends of inlet and outlet channels of QualiCell, the device can beincorporated into any appropriate coolant transport system, which willprovide device with continuous flow of said coolant through the heatintake box.

The coolant flows into the specifically shaped (see FIG. 3-5) inletchannel and gradually takes shape of uniform flat stream (see FIG. 6) onthe entrance into the heat intake box. Therefore, inside the heat intakebox the regime of steady uniform flow of coolant is realized.

The inner top and bottom surfaces of the heat intake box have the shapeof an appropriate triangular lattice of dimples (see FIG. 7) that do notallow a potential streamlining by the coolant at any its velocity, sothat the vortical boiling regime of streamlining has to develop. Themutual orientation of said lattice and bulk flow of the streamliningcoolant is shown in FIG. 8, so that in the well-developed stage of thevortical boiling regime of streamlining the picture of the flow insidethe heat intake box has a structure as it is shown in FIG. 9.

It is important to avoid any parasitic turbulization of stream ofcoolant all over convective cooling cell, what requires properconjugation of all heat exchange surfaces inside of it, as it is shownin FIG. 10.

In another embodiment, the invented convective cooling cell can beassembled from two parts—Upper half and Lower half of it, as it is shownin FIG. 11. These parts could be manufactured through the stamping ormelting process. Being soldered or welded one on top of other, thoseparts accomplish said convective cooling cell.

Because the present invention is realizing the unique feature ofvortical boiling as the highly efficient heat transfer on thestreamlined surface accompanied with incredibly small hydraulicresistance, it allows another embodiment, where multi-store setting ofcoolant channels in the same cooling cell are formed by the heatgenerating layers of an integral circuit the external surfaces of whichare modified with triangular lattice of hemi-spherical dimples, andwhich are suited horizontally on some distance from each other, beingelectrically connected due to set of tinny vertical posts, so thatchannels for coolant are created as spaces between said layers, as it isshown schematically in FIG. 12.

The foregoing descriptions of specific embodiments of the presentinvention are presented for purposes of illustration and description.They are not intended to be exhaustive or to limit the invention toprecise forms disclosed and, obviously, many modifications andvariations are possible in light of the above teaching. The embodimentsare chosen and described in order to best explain principles of theinvention and its practical application, to thereby enable othersskilled in the art to best utilize the invention and its variousembodiments with various modifications as are suited to the particularuse contemplated. It is intended that a scope of the invention bedefined broadly by the Drawings and Specification appended hereto and totheir equivalents. Therefore, the scope of the invention is in no way tobe limited only by the following exemplary claims nor by any possible,adverse inference under the rulings of Warner-Jenkins Company, v. HiltonDavis Chemical, 520 US 17 (1997) or Festo Corp. V. Shoketsu KinzokuKogyo Kabushiki Co., 535 U.S. 722 (2002), or other similar case law orsubsequent precedent should not be made if such claims are amendedsubsequent to this Provisional Patent Application.

REFERENCES

[1] G. I. Kiknadze, Y. K. Krasnov, N. F. Podymaka, and V. B. Khobenski,“Self-organization of vortex structures in water flowing over ahemispherical cavity”, Doklady Academia Nauk SSSR, vol. 291, p. 0315(1986).

[2] “The heat exchange surface”, USSR Patent 1554537, priority by May29, 1987.

[3] I. A. Gachechiladze, G. I. Kiknadze, Y. K. Krasnov, et all,“Heat/mass transfer”, MIF, “Heat transfer with self-organization ofwhirlwind-like structures”, The problem reports, Sessions 1-2.“Convective, irradiated, and compound heat transfers”. Minsk (USSR),1988, pp. 270.

[4] S. T. Belyaev, Y. K. Krasnov, The vortex and the ditch-streaming,Preprint No 217-90 of the Sibirian Division of The Academia of Scienceof USSR, Novosibirsk, (1990).

[5] Belyaev, S. T., Krasnov, Y. K., “On the intrinsic mass of a singularvortex thread”, Doklady Academia Nauk SSSR, 1991, vol. 319, No. 1, pp.150-153.

[6] Y. K. Krasnov, The Dynamics of Quantum Vortices, (2001), E-bookavailable on www.thequalitics.com

[7] “Vortical Boiling Presentation”, Developed by Qualitics, Inc. (USA)and BASERT (Russia), 2001, www.thequalitics.com

1. A convective cooling cell, that being in good contact with a heatedsurface, providing an intake of heat from this surface and transport ofit into an appropriate refrigerator by the fluid coolant that is passingthrough said cell, comprising: a heat intake box, the top and bottominner surfaces of which are shaped in the form of triangular lattice ofsectored spherical dimples; an inlet and outlet coolant transportingchannels; and couplers on the ends of each channel to connect said cellwith the external coolant transporting communications; wherein: inletchannel is shaped in such a way, which provides a non-broken stream ofcoolant on the entrance of the heat intake box; The coolant transportingchannel into the heat intake box is organized in such a way thatprovides a straight-forward flow of coolant from entrance to exit ofsaid box; the triangular lattice of sectored spherical dimples on thetop and bottom inner surfaces of the heat intake box which is orientedin such a way that the distance between any two neighbor dimples, thatare laying along the same straight streamline of coolant, is square rootof 3 times longer than the parameter of said lattice; the triangularlattice of sectored spherical dimples on the top and bottom innersurfaces of the heat intake box is organized in such a way that providesthe regime of vortical boiling flow of coolant into said box; dimples inthe triangular lattice of sectored spherical dimples on the top andbottom inner surfaces of the heat intake box are grinded along 30degrees in both side in respect to the direction of stream of coolantinto the heat intake box, in order to provide saddle-like path betweendimples along grinded directions;
 2. The apparatus of claim 1, furthercomprising two parts—an upper part and a lower part that, being solderedor welded one on top of other, accomplish said convective cooling cell.3. The apparatus of claim 1, wherein the heat intake cell comprisesmulti-store set of channels for coolant's flow and heat generatinglayers are suited between those channels, just as it is illustrated inFIG. 12, so that external surfaces of said layers, being modified bytriangular lattice of hemi-spherical dimples, are forming the boundarywalls of said channels.